2 Level 8 Machine-Type monsters

Once per turn: You can detach 1 Xyz Material from this card; it gains 1000 ATK, until the end of your opponent's next turn. If this card is destroyed while it has Xyz Material: You can banish 1 "Super Defense Robot" monster from your Graveyard; Special Summon this card from your Graveyard, then, you can attach 1 "Super Defense Robot" monster from your Graveyard to this card as an Xyz Material.